Celestron NexStar 4SE 102mm f/13 Maksutov-Cassegrain GoTo Telescope

BH #CEN4SE • MFR #11049
Celestron NexStar 4SE 102mm f/13 Maksutov-Cassegrain GoTo Telescope
Key Features
  • 102mm Maksutov-Cassegrain Telescope
  • 1325mm Focal Length, f/13 Focal Ratio
  • StarBright XLT Optical Coating System
  • NexStar+ Computer Hand Controller
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Celestron's NexStar 4SE 125mm f/13 Maksutov-Cassegrain GoTo Telescope is a powerful, versatile, and user-friendly catadioptric-style scope that can be used for observing everything from the moon and planets to bright deep-sky objects like stars, galaxies, and nebulae. Using Celestron's proprietary StarBright XLT multicoating system, light transmission is increased throughout the entire optical path with anti-reflection multicoated lenses, highly reflective multicoated mirrors, and crown optical glass elements. Similar to their Schmidt cousins, the Maksutov design exchanges the conventional front corrector plate with a convex meniscus lens, which results in a smaller secondary mirror—limiting obstruction and increasing contrast, while eliminating the need for periodic collimation. While the focal ratio is a relatively slow f/13, the scope's optical performance, added to the mount's precision tracking system and integrated equatorial wedge, allows it to be a competent astrophotography/imaging platform for the moon and planets.
More on the Way
Expected availability: 2-4 weeks
$499.00
$42/mo. suggested payments
with 12 Mos. Promo Financing* 

Celestron 4SE Overview

  • 1Description
  • 2Performance
  • 3NexStar+ Computer Controller
  • 4Mount & Tripod
  • 5Included Accessories

Celestron's NexStar 4SE 125mm f/13 Maksutov-Cassegrain GoTo Telescope is a powerful, versatile, and user-friendly catadioptric-style scope that can be used for observing everything from the moon and planets to bright deep-sky objects like stars, galaxies, and nebulae. Using Celestron's proprietary StarBright XLT multicoating system, light transmission is increased throughout the entire optical path with anti-reflection multicoated lenses, highly reflective multicoated mirrors, and crown optical glass elements. Similar to their Schmidt cousins, the Maksutov design exchanges the conventional front corrector plate with a convex meniscus lens, which results in a smaller secondary mirror—limiting obstruction and increasing contrast, while eliminating the need for periodic collimation. While the focal ratio is a relatively slow f/13, the scope's optical performance, added to the mount's precision tracking system and integrated equatorial wedge, allows it to be a competent astrophotography/imaging platform for the moon and planets.

Driving the dual servo motors on the mount is the brain of the NexStar 4SE: the iconic NexStar+ computer hand controller. Packed with 40,000+ celestial objects, it can hold up to 100 additional user-defined destinations and is updatable via the Celestron website. It has multiple alignment procedures to get you observing fast—including the super-easy SkyAlign system. Capable of being used in the Northern or Southern Hemispheres, the NexStar has sidereal, lunar, and solar tracking speeds to accurately follow near- and deep-sky objects, plus nine slew speeds and the ability to automatically trigger a camera's shutter release for Fastar or piggyback wide-field photography or conventional prime-focus astrophotography.

Performance

  • 4" (102mm) aperture
  • f/13 focal ratio
  • 1325mm focal length
  • Maksutov-Cassegrain optical system
  • Front convex meniscus lens corrects spherical and chromatic aberrations and comas (off-axis aberration) across the entire field of view
  • Smaller secondary mirror versus Schmidt-Cassegrain reduces obstructions and increases contrast
  • BK7 optical glass primary mirror
  • StarBright XLT optical coatings: Multilayer aluminum/SiO2 (quartz)/TiO2 (titanium dioxide) mirror coatings with flat reflectivity across the light spectrum for both astrophotography/astroimaging and visual observation
  • Multilayer MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide) anti-reflective lens coatings
  • High-transmission water white glass corrector lens with 97.4% light transmission
  • Resolution: Rayleigh: 1.36 arcsec / Dawes: 1.14 arcsec
  • Secondary mirror obstruction: 1.25", 34.4% by diameter, 11% by area
  • Internal 90° flip mirror: With the mirror flipped up, the 90° angle puts head in a comfortable viewing position when scope is pointed at or near the zenith; lay the mirror down to direct light to the visual back for astrophotography/imaging

NexStar+ Computer Controller

  • 2-line, 16-character LCD display
  • 19 fiber optic backlit red LED buttons
  • Database of over 40,000 celestial objects plus 100 user defined
  • Automatically slew to planets, stars, constellations, and a variety of catalogs
  • Camera control: For piggyback wide-field or conventional astrophotography through the optical tube assembly, the controller can automatically trigger the shutter release to capture the image
  • Anti-backlash compensation programs out play between gears for more precise tracking
  • Tour Mode: Shows a selection of the most popular objects for the time and date you are observing
  • Constellation Tour: Allows you to take a tour of all the best objects within a particular constellation
  • Alignment procedures: SkyAlign, Auto 2-Star, 1-Star, 2-Star, and Solar System
  • SkyAlign alignment: Takes minutes, with minimal effort or experience—point the telescope at three bright objects in the sky, and the telescope does the rest
  • Nine slew speeds: 4°/sec, 2°/sec, 1°/sec, 0.5°/sec, 2x, 4x, 8x, 16x, and 32x
  • Sidereal, Solar, and Lunar tracking rates for observing the fast-moving moon, to slower-moving deep-space subjects
  • Tracking modes: Alt-Az (default, for general GoTo use), EQ North (use for long-exposure astrophotography in Northern Hemisphere with EQ wedge engaged), EQ South (use for long-exposure astrophotography in Southern Hemisphere with EQ wedge engaged), Off (no tracking when using as a terrestrial spotting scope)
  • RS-232 communication port allows for computer control
  • Flash updatable via the Celestron website

Database Details:

  • Solar system objects including the sun, moon, and planets
  • Named objects
  • Stars: Asterims, variable stars, double stars, named stars
  • Caldwell catalog
  • Messier catalog
  • NGC catalog
  • SAO catalog
  • Constellations

 

Mount & Tripod

Mount:
  • Single-fork alt-az
  • Dual-axis servo motors allow for precise tracking with virtually no vibration
  • Motor resolution: 0.26 arcsec
  • Optical encoders track mount movement to improve tracking and GoTo accuracy while allowing the mount to maintain alignment when moved manually
  • Communication ports: Autoguider port, Aux port, hand controller
  • Runs on eight user-supplied AA batteries or optional 12 VDC power supply
Tripod:
  • Stainless steel legs
  • Adjustable height accommodates a variety of observation positions or users
  • Built-in equatorial wedge enables more precise tracking accuracy during long-exposure astrophotography
  • Tray holds accessories such as eyepieces and filters and adds stability and vibration reduction
  • Weight: 10 pounds

Included Accessories

Eyepiece:
  • 1.25" diameter barrel
  • 25mm focal length produces 53x magnification
  • Anti-reflection multicoated glass improves color rendition and contrast
  • Threaded barrel accepts most 1.25" astronomical filters
  • Fold-down rubber eyecup for use with or without eyeglasses
StarPointer Finder
  • Projects a single red dot in line of sight
  • Unmagnified to make finding objects faster and easier
  • Used primarily for alignment process

 

UPC: 050234110495

Celestron 4SE Specs

Optical Tube Assembly
Optical DesignMaksutov Cassegrain
Aperture102 mm / 4"
Focal Length1325 mm
Focal Ratiof/13
FocuserInternal
Eyepiece Barrel Diameter1.25"
Diagonal90° Star
FinderscopeYes
Optical Tube DimensionsLength: 13.5" / 342.9 mm
Mount
TypeMotorized; Alt-Azimuth Single Fork
GoTo CapabilityYes, NexStar+ controller
Tripod
TypeAdjustable, 2-Section
Material of TripodStainless Steel
General
Batteries8 x AA
GPSNo
Wi-FiNo
Weight10 lb / 4.5 kg (Tripod)
21 lb / 9.5 kg (Fully Assembled)
Packaging Info
Package Weight38 lb
Box Dimensions (LxWxH)32 x 27.5 x 13.5"
See any errors on this page? Let us know

YOUR RECENTLY VIEWED ITEMS

Hi, i cannot seems to see what is the ...

Hi, i cannot seems to see what is the magnification of this 4SEunit?
Asked by: Kathy
The NexStar 4SE comes with a 25mm eyepiece. The focal length of the NexStar 4SE is 1325mm. 1325mm divided by 25mm equals 53x magnification. You can use higher magnification eyepieces such as a 20mm, 15mm, or a 10mm as long as the seeing condition (atmosphere) is calm and steady. The highest useful magnification is 241x. Any magnifications above that limit will overpower the telescope's capabilities and may result in blurry images. Hope this helps!
Answered by: Telescope
Date published: 2020-12-27

question

Can the 4SE be aligned during the day? I'd like to track the sun (with a proper filter, of course).
Asked by: Stuart
Yes it can. It has a solar alignment feature. You do need to enable it in setup
Answered by: Earl A.
Date published: 2018-08-27

question

Does this model track the moon? I want to be able to take HDR photos and Time Lapse of the moon.
Asked by: Antonio
This telescope (after doing a setup procedure) will target the moon and track it for about 30 seconds.
Answered by: Thomas W.
Date published: 2018-08-27

question

I have the NexStar 4 se telescope now how do I take photos of the Moon and stars with a Nikon camera through that small eyepiece ? I have a T ring adapter model # 93625 for a Nikon camera it fits in the top eyepiece but how do I use my 25mm plossl and other focal length eyepieces to take close up photos of the moon ?
Asked by: Anonymous
So you would not be able to use the T-Adapter with eyepieces. However we do sell the Celestron SLR Camera Adapter with Integral 2x Barlow Lens. Which would give you some more magnification if you needed. Then you can get the T-Ring that you need to attach your Nikon DSLR. You can do the Vello Lens Mount Adapter - T Mount Lens to Nikon F Mount Camera, which will work with the adapter you have now. As well as the 2X Barlow Lens Camera Adapter. Website link for Barlow: http://bhpho.to/1OmELU1Website link for T-Ring: http://bhpho.to/1d8lKOS
Answered by: Alex S.
Date published: 2019-12-18

question

What is the aperture of this model?
Asked by: Anonymous
The aperture for the model you are asking about is 4 inches. Whatever the number is about NexStar is the aperture.
Answered by: Derek S.
Date published: 2018-08-27
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